Polygraph tests can supposedly detect when a person is lying. But how can a machine do that, and can we really trust the results they provide?

Career Do Lie Detector Tests Really Work? The modern polygraph test is widely used, but is it accurate? Posted January 14, 2020 | Reviewed by Abigail Fagan ...

Saxe has called the error rate for polygraph testing “significant,” and concluded that even studying polygraph testing is ...